Bobbin holder or clamp



(No Model.)

G. T. BOWMAN. BOBBIN HOLDER 0R CLAMP.

No. 589,690. Patented Sept. 7,1897.

WITNESSES I INVENTOH (1.6 .5 H m BY arm/awn l UNITED STATEs P TENTFFICE.

BOBBIN HOLDER OR CLAMP.

SPECIFICATION forming part of Letters Patent No. 589,690, datedSeptember '7, 1897.

Application filed June 12,1894. Renewed May 4, 1897. Serial No. 635,077.(No model.)

To all 1071,0711, it HUI/Z] concern:

Be it known that I, GEORGE T. BOWMAN, a itizen of the United States,residing at Phi1adelphia, (Frankford,) in the county of Philadelphia andState of Pennsylvania, have i11- vented certain new and usefulImprovements in Bobbin Holders or Clamps, of which the following is aspecification.

My present invention relates to a holder or clamp for the bobbins ofso-called horizontal bobbin-winders, although it is applicable in wholeor in part to other types of such inachines.

The principal objects of my present invention are, first, to provide asimple, durable, efficient, reliable,and comparatively inexpensivedevice, holder, attachment, or clamp for not only preventing endwiseplay or wabblin g movements of the bobbin in respect to its spindle,whereby waste of yarn, thread, or other material is obviated andaccuracy and uniformity of winding insured, but also permitting of theready, convenient, and rapid removal and application of the bobbin toand from the spindle, and, second, to so construct, arrange, and combinethe various parts of the clamp, device, or holder as that it may beconveniently applied to such bobbins and spindles as are commonlyemployed in mills and factories without requiring any addition to oralterations or changes in such standard spindles and bobbins.

In my invention use is made of a clamp or holder comprising a base heldbetween the sections of a spindle and provided with springarms adaptedto engage a bobbin mounted on the spindle.

The nature, characteristic features, and scope of my invention will bemore fully understood from the followin g description ,taken inconnection with the accompanying drawings, forming part hereof, and inwhich--= Figure 1 is an clevational view illustrating a bobbin clamp orholder embodying features of my invention in application to a spindle orbobbin. Fig. 2 is a perspective view illustrating the bobbin holder orclamp shown in Fig. 1, and Fig. 3 is a sectional view showing the partsdetached. 7

In the drawings, D and (Z are the respective parts of a spindle, whichare adapted for corn corresponding recesses in the base of the bobbin Ein order to impart rotary motion from the spindle thereto.

f is an annular groove which is commonly cut or otherwise formed aroundthe base of all bobbins for use in mounting them in shuttles, as will bereadily understood by those skilled in the art to which my inventionappertains.

Havingthus described and pointed out so many and such parts of awell-known and standard type of bobbin and spindle to which myinventionis applicable, I will now proceed to describe the latter and also themanner in which it is combined with the above-mentioned parts.

A is a clamp or holder comprising a base a, perforated, as shown in Fig.2, for the accommodation of the portion 02' of the spindle. This base ais adapted to beheld between the parts (Z and D of the spindle and isprovided with integral upwardly and inwardly extending spring-arms 13,adapted to engage the base of the bobbin E. For this purpose each of thearms B is provided with a shoulder b, stamped or otherwise formedthereon and adapted to take into the groove f of the bobbin E.

In use the part1) of the spindle is detached from the part cl thereof.The base a is mounted upon the part of of the spindle F by passing thethreaded portion (1 through the aperture of the base a, whereupon thepart D is secured to place, as shown in Fig. 1. Under thesecircumstances the clamp or holder A is firmly attached to the spindle insuch manner that the shoulders I) of its arms B are adapted to take intothe groove f of the bobbin E.

From the foregoing description it is obvious that my improved clamp orholder may be readily and rapidly applied to the spindle and bobbin byutilizing the ordinary features of construction thereof and withoutnecessitating' any changes in or additions to either of these parts.-

The mode of operation of the hcreinabovedescribed device is as follows:For the sake of a further description of my invention it Will be assumedthat the spindle d is rotated around a horizontal axis through theintervention of the pulley or wheel H in the ordinary and Wellunderstood manner. The empty bobbin E may be readily applied to theportion F of the spindle by the simple op eration of pushing the bobbinonto the latter until the lugs on the part D enter their correspondingrecesses and until the shoulders 17 take into the annular recess f.Under these circumstances the arms B hold the bobbin E firmly up againstthe vface of the spindle-head D, so that the bobbin E is not only heldagainst movement in the direction of its length, but is also preventedfrom Wabbling at its free end in respect to its axis of rotation. Theabsence of endwise play and freedom from Wabbling movements is importantfor many reasons, among which the following may be mentioned; If thebobbin were afforded endwise playdt would become detached from theprojections upon the spindle-head D and consequently Would cease torotate. In fact it has hitherto been customary in starting the bobbin tomanually Wind the thread or yarn not only onto the bobbin but alsodownward onto the spindle-head D in order to tie the bobbin to thespindle-head and thus prevent endwise playof the former. However, thisresulted in the waste of considerable yarn or thread. Moreover, undersuch circumstances the free end of the bobi not limit myself to theprecise construction and arrangement of parts hereinabove set forth andillustrated in the drawings; but,

Having thus described the nature and objects of my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

In combination a two-part spindle having its respective parts detachably connected and whereof one is internally threaded and where of theother is provided with a screw end adapted to engage the internallyscrewthreaded portion of the firstmentioned part: and a clamp or holdercomprising a base per- 'forated for the passage of said screw end andheld between the respective parts of the spin die and having spring-armscarried by its base, substantially as and for the purposes set forth Intestimony whereof I have hereunto signed my name Geo. 'r. BOWMAN.

lvitnesses:

GEORGE L. BATTERSBY, LEON M. II'UTHER.

